@article{nivre2018universal,
  title={Universal Dependencies 2.2},
  author={Nivre, Joakim and Abrams, Mitchell and Agi{'c}, {{Z}}eljko
  and Ahrenberg, Lars and Antonsen, Lene and Aranzabe, Maria Jesus and
  Arutie, Gashaw and Asahara, Masayuki and Ateyah, Luma and Attia,
  Mohammed and others},
  year={2018}
}